Pneumatic tool-coupling.



A. HEBERT.

PNEUMATIG TOOL GOUPLING.

APPLIOATION FILED MAE.11, 1.909.

933,56 1 Patented Sept.' 7, 1909.

Ir-TEE.

guna/Woof,

Tool-Couplings; and I ALEXANDRE HEBERT, OF MONTPELIER, VERMONT.

PNEUMATIC TOOL-COUPLING.

Application filed March 11, 1909.

Specification of Letters Patent.

Patented Sept. 7, 1909.

Serial No. 482,731.

To all whom 'it may concern: Y

Be it known that I, ALXANDRE HEBERT, a citizen of the United States,residing at Montpelier, in the county of Washington and State ofVermont, have invented certain new and useful Improvements in Pneumaticdo declare the following to be a full, clear, and exact descriptionofthe invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention is designed as an improvement on the pipe or hosecoupling shown and described in my prior patent 909,790, dated January12th 1909.

The object f the invention is to provide a device of thisv class thetwormembers of which have a maximum frictional contact area and apivoted locking member for securing the two coupling members togetherhaving its opposite ends housed in recesses` in the outer face of theouter coupling member.

With this and other objects in view, the invention consists of certainnovel features of construction, combination and arrangement of parts aswill be more fully described and particularly pointed out in theappended claim.

In the accompanying drawings; Figure 1 is a side elevation of thisimproved pipe or hose coupling; Fig. 2 is a longitudinal sectionthereof; Fig. 3 is a transverse section taken on the line 3-3 of Fig. 1;Fig. 4 is a detail side elevation of the inner section or member of thecoupling; and, Fig. 5 is a detail side elevation of the pivoted lockingmember.

In the embodiment illustrated the coupling comprises inner and outertubular sections or members `1, and 2, and a member 10, for locking themtogether. The inner member 1, is provided at its outer end with a seriesof annular outwardly extending ribs 8, which serve to retain a hose inposition thereon and the outer end of the outer section 2, may besimilarly constructed to receive a hose or it may be externallyscrew-threaded as shown at 4, for the application of a pneumatic tool orthe like. The inner member 1, is provided near its inner end withv acylindrical enlargement 5, having a longitudinal reduced extension 6, atits inner terminal. This enlargement 5, is adapted to enter and turnfreely in a cylindrical socket formed in the enlarged inner end 7, ofthe outer section 2, and lthe extension 6, of said inner member projectsinto and extends through the outer end of the member 2, to provide amaximum contact surface between the two members 1, and 2, to form atight joint.

The enlarged inner end 7, of the outer section 2, has an angular outerface preferably made square with the corners thereof provided withsegmental recesses 7 arranged to aline with each other. The side wallsof one of the recessedcorners are provided with registering apertures toreceive a pintle 11, on which one end of the locking member 10, ispivotally mounted. This enlarged end 7, of the section 2,v is alsoprovided with a radial slot 12, arranged adjacent the corner having theregisteringv apertures therein. The enlargement or head 5, of the innermember 1, is formed with an annular groove 8, arranged interm'ediatelyof the ends of said head for the reception of a locking projection 9,formed on the inner edge of the locking member 10, to be described.

The locking member 10, is preferably made substantially semi-circular inform and is constructed of resilient metal and adapted to fit around theexterior of the enlarged end 7, of the section 2, fitting in therecesses formed in the corners thereof. One of the ends of this member10, is provided with an eye 13, for the passage therethrough of thepintle 11, and the locking projection 9, is arranged adjacent said eyeand is adapted to extend through the slot 12, into the groove 8, of themember 1, being engaged'on opposite sides by the walls of said grooveand thereby preventing longitudinal movement of the inner memberrelatively to the outer member. The inner face of said projection 9, iscurved to fit the curved bottom of the groove 8, to permit the membersto turn relatively to each other. The free end of the member 10, isresilient and is adapted to spring around the curved bottom wall of therecess formed in one corner of the member 2. Both ends of this lockingmember 10 are thereby housed in the recesses of the member 2, and areprotected against accidental engagement with adjacent objects whichwould cause separation of the two members 1, and 2, when not desired.The arrangement of the pivoted end on the pintle mounted in theapertured walls of one of the recessed corners provides a safe andreliable connection and 'the side walls of the recess-serve as braces tohold the end of the locking member against lateral movement.

Owing to the resiliency of the free end of the locking member saidmember will be effectively retained in its locking position shown inFig. 3, and may be quickly and easily moved to an inoperative positionby simply forcing said end out of its seat and then swinging the member10, upon its pivot to remove the inwardly extending projection 9, fromthe groove 8, in the member l. Thus it will be obvious that the angularformation of the outer face of the head 7 with the segmental.A recessesin its corners provides a protective housing for the locking member andalso a nut like member for engagement by a wrench for connecting anddisconnecting the sections 2 from the tool to which it is applied.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes inthe form, proportion and the minor details ofconstruct-ion may be resorted towithout departing from the principle orsacrificing any lof the advantages of this invention as dened in theappended claim. j

I claim as my invention:

A pipe coupling comprising inner. and

`outer tubular sections the inner section having a cylindrical headformed with an annular groove, the outer section having a cylindricalsocket at one end to receive the head of the inner section, the outerface of said socketed end of the outer Vsection being angular and havingregistering segmental recesses formed in the corners thereof andarranged in alinement around the periphery thereof, the opposite sidewalls of one of said recesses being apertured to receive a pintle,

said outer section being also provided with a radial slot to registerwith the groove in the inner section when the parts are assembled, anapproximately semi-circular locking member constructed of resilientmetal and having an eye formed at one endnthereof and its outer endcurved to yieldablyY engage the bottom of one of the other recesses,projection formed integral with the locking member on its inner face andadapted to project through the slot in the outer section and to enterthe groove in the inner section to lock said sections together,'the endsof said locking member being housed insaid aV locking recesses of theouter member whereby ac cidental opening of said member is prevented.

In testimony whereof l have hereunto set my hand in presence of twosubscribing witnesses.

ALEXANDRE HEBERT.

Witnesses s VERNON A. DOTY, R. G. FULLER.

